<template>
  <a-modal
    title="上传图片"
    :visible="visible"
    :maskClosable="false"
    :confirmLoading="confirmLoading"
    :width="800"
    :footer="null"
    @cancel="cancelHandel"
  >
    <a-row>
    <a-col :xs="24" :md="12" :style="{height: '350px'}">
    <!-- <div style="height:350px;"> -->
      <vue-cropper
        ref="cropper"
        :img="options.img"
        :info="true"
        :autoCrop="options.autoCrop"
        :autoCropHeight="options.autoCropHeight"
        :fixedBox="options.fixedBox"
        :autoCropWidth="options.autoCropWidth"
        @realTime="realTime"
        :centerBox='true' 
      ></vue-cropper>
    <!-- </div> -->

    </a-col>
      <a-col :xs="24" :md="12" :style="{height: '350px',textAlign:'center',display:'flex',}">
        <div class="avatar-upload-preview">
          <img :src="previews.url" :style="previews.img" />
        </div>
      </a-col>
    </a-row>
    <br />
    <a-row>
      <a-col :lg="2" :md="2">
        <a-upload name="file" :beforeUpload="beforeUpload" :showUploadList="false">
          <a-button icon="upload">选择图片</a-button>
        </a-upload>
      </a-col>
      <a-col :lg="{span: 1, offset: 2}" :md="2">
        <a-button icon="plus" @click="changeScale(1)" />
      </a-col>
      <a-col :lg="{span: 1, offset: 1}" :md="2">
        <a-button icon="minus" @click="changeScale(-1)" />
      </a-col>
      <a-col :lg="{span: 1, offset: 1}" :md="2">
        <a-button icon="undo" @click="rotateLeft" />
      </a-col>
      <a-col :lg="{span: 1, offset: 1}" :md="2">
        <a-button icon="redo" @click="rotateRight" />
      </a-col>
      <a-col :lg="{span: 2, offset: 6}" :md="2">
        <a-button type="primary" @click="finish('blob')">保存</a-button>
      </a-col>
    </a-row>
  </a-modal>
</template>
<script>
import { uploadPic } from '@/api/login'

export default {
  data() {
    return {
      visible: false,
      id: null,
      confirmLoading: false,
      fileList: [],
      uploading: false,
      options: {
        // img: 'https://zos.alipayobjects.com/rmsportal/jkjgkEfvpUPVyRjUImniVslZfWPnJuuZ.png',
        img: '',
        autoCrop: true,
        autoCropWidth: 200,
        autoCropHeight: 200,
        fixedBox: true
      },
      previews: {}
    }
  },
  methods: {
    edit(id) {
      this.visible = true
      this.id = id
      /* 获取原始头像 */
    },
    close() {
      this.id = null
      this.visible = false
    },
    cancelHandel() {
      this.close()
    },
    changeScale(num) {
      num = num || 1
      this.$refs.cropper.changeScale(num)
    },
    rotateLeft() {
      this.$refs.cropper.rotateLeft()
    },
    rotateRight() {
      this.$refs.cropper.rotateRight()
    },
    beforeUpload(file) {
      const _this = this
      const reader = new FileReader()
      // 把Array Buffer转化为blob 如果是base64不需要
      // 转化为base64
      reader.readAsDataURL(file)
      reader.onload = () => {
        this.$nextTick(() => {
          _this.options.img = reader.result
        })
      }
      // 转化为blob
      // reader.readAsArrayBuffer(file)
      return false
    },
    // 上传图片（点击上传按钮）
    finish(type) {
      const _this = this
      const formData = new FormData()
      // 输出
      if (type === 'blob') {
        this.$refs.cropper.getCropBlob(data => {
          const img = window.URL.createObjectURL(data)
          this.model = true
          this.modelSrc = img
          formData.append('file', data)
          formData.append('school_id', this.$store.state.user.school)
          uploadPic(formData).then(response => {
            _this.visible = false
            _this.$emit('ok', response)
          })
        })
      } else {
        this.$refs.cropper.getCropData(data => {
          this.model = true
          this.modelSrc = data
        })
      }
    },
    okHandel() {
      const vm = this
      vm.confirmLoading = true
      setTimeout(() => {
        vm.confirmLoading = false
        vm.close()
        vm.$message.success('上传头像成功')
      }, 2000)
    },
    realTime(data) {
      this.previews = data
    }
  }
}
</script>

<style lang="less" scoped>
// _this.$emit('ok', _this.successImg)
.avatar-upload-preview {
  position: absolute;
  top: 50%;
  transform: translate(50%, -50%);
  width: 180px;
  height: 180px;
  border-radius: 50%;
  box-shadow: 0 0 4px #ccc;
  overflow: hidden;

  img {
    width: 100%;
    height: 100%;
  }
}
</style>
